Friday Harbor Airport Weather Forecast

    • 36
    • 48

    Partly Sunny

    • 35
    • 47

    Increasing Clouds

    • 36
    • 47

    Partly Sunny

    • 36
    • 45

    Mostly Cloudy

    • 38
    • 45

    Mostly Cloudy

    • 36
    • 45

    Chance Rain/Snow

    • 36
    • 44

    Chance Rain/Snow

Today 18 Jan San Juan County

Mostly sunny. Highs in the mid to upper 40s. Light wind.

Tonight 18 Jan San Juan County

Mostly clear. Lows in the 30s to lower 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Friday Harbor Airport Temperature Statistics

January Temperature

Friday Harbor Airport (0 miles)

  • Lowest 8 January, 2026

    33.1 °F

  • Average January

    45 °F

  • Highest 13 January, 2026

    53.1 °F

Climate (2021–Present)

Friday Harbor Airport (0 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    59.6 °F
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